MXRT1050_EVK: Fixes test failure seen with IAR and ARM toolchains

Fixes test failure seen with tests-mbed_hal-stack_size_unification
under IAR and ARM toolchain

Signed-off-by: Mahesh Mahadevan <[email protected]>

Author: mmahadevan108

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_MIMXRT1050/device/TOOLCHAIN_ARM_STD/MIMXRT1052xxxxx.sct

@@ -56,9 +56,6 @@
 
 #define __ram_vector_table__           1
 
-#define __stack_size__                 0x8000
-#define __heap_size__                  0x10000
-
 #if (defined(__ram_vector_table__))
   #define __ram_vector_table_size__    0x00000400
 #else

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_MIMXRT1050/device/TOOLCHAIN_IAR/MIMXRT1052xxxxx.icf

@@ -55,7 +55,12 @@
 
 define symbol __ram_vector_table__ = 1;
 
-define symbol __stack_size__=0x8000;
+/* Sizes */
+if (!isdefinedsymbol(MBED_BOOT_STACK_SIZE)) {
+    define symbol MBED_BOOT_STACK_SIZE = 0x400;
+}
+
+define symbol __stack_size__=MBED_BOOT_STACK_SIZE;
 define symbol __heap_size__=0x10000;
 
 define symbol __ram_vector_table_size__ =  isdefinedsymbol(__ram_vector_table__) ? 0x00000400 : 0;
@@ -90,15 +95,10 @@ define symbol m_boot_hdr_ivt_start           = 0x60001000;
 define symbol m_boot_hdr_boot_data_start     = 0x60001020;
 define symbol m_boot_hdr_dcd_data_start      = 0x60001030;
 
-/* Sizes */
-if (!isdefinedsymbol(MBED_BOOT_STACK_SIZE)) {
-    define symbol MBED_BOOT_STACK_SIZE = 0x400;
-}
-
 if (isdefinedsymbol(__stack_size__)) {
   define symbol __size_cstack__        = __stack_size__;
 } else {
-  define symbol __size_cstack__        = MBED_BOOT_STACK_SIZE;
+  define symbol __size_cstack__        = 0x0400;
 }
 
 if (isdefinedsymbol(__heap_size__)) {